Disable Access to a File using NTFS
To disable a file (i.e. to Deny access to a file), do the following:
1.) Right click on the file in Explorer, and choose "Properties", as shown in the figure.
2.) Click on the Security tab, and then click on the Add button as shown in the figure.
If you don't have a Security tab, your are probably not using NTFS. If so, it is strongly
recommended that you upgrade to NTFS (using the convert /FS:NTFS command) so that you
can use file permissions.
3.) Double click on the "Everyone" Group, and then click on the OK button.
4.) Click on the "Everyone" Group, and then click on the Deny "Full Control" checkbox, as
shown in the figure.
5.) Click on the OK Button.